using System;
using System.Collections;
using System.Collections.Specialized;
using System.Data;
using System.Data.SqlTypes;
using System.Data.SqlClient;
using System.Text;
using ECommerce.DAL;


namespace Entity
{

    /// <summary>
    /// This object represents the Private Fields of TblEvents.
    /// </summary>

    [System.ComponentModel.DataObject]
    public class TblEvents : DatabaseUtility
    {
        #region TblEvents Private Fields


        Int32 _eventsId;
        String _eventsName = String.Empty;
        String _eventsBriefDescription = String.Empty;
        String _eventsDescription = String.Empty;
        String _eventsImageUrl = String.Empty;
        DateTime _eventsDate;
        String _displayOrder = String.Empty;
        Boolean _isActive;
        Boolean _isDeleted;
        DateTime _createDate;
        DateTime _updateDate;

        #endregion
        #region TblEvents Constractor
        /// <summary>
        /// Creates an empty object of TblEvents. 
        /// This is mainly used to create a new instance of TblEvents to add a new TblEvents.
        /// </summary>
        public TblEvents() { }


        /// <summary>
        /// Used to retrieve employee information from database, 
        /// which is also used by Update method to save information of an existing TblEvents.
        /// </summary>
        public TblEvents
        (
            Int32 eventsId,
            String eventsName,
            String eventsBriefDescription,
            String eventsDescription,
            String eventsImageUrl,
            DateTime eventsDate,
            String displayOrder,
            Boolean isActive,
            Boolean isDeleted,
            DateTime createDate,
            DateTime updateDate
        )
        {
            _eventsId = eventsId;
            _eventsName = eventsName;
            _eventsBriefDescription = eventsBriefDescription;
            _eventsDescription = eventsDescription;
            _eventsImageUrl = eventsImageUrl;
            _eventsDate = eventsDate;
            _displayOrder = displayOrder;
            _isActive = isActive;
            _isDeleted = isDeleted;
            _createDate = createDate;
            _updateDate = updateDate;
        }

        #endregion
        #region TblEvents Properties

        /***********************************************************************************************
                                    -- PROPERTIES --        
         Contains all the properties representing the data fields of the current entity.
         ***********************************************************************************************/

        /// <summary>
        /// This is the Primary key value of the EventsId, which can't be assigned from the application,
        /// to ensure the data consistancy, by not letting the user to change the PK_TblEvents to update the data of an another TblEvents instance.
        /// For view or updation purpose, every TblEvents will be retrieved thru the proper 'Get' method.
        /// </summary>

        public Int32 EventsId
        {
            get { return _eventsId; }
        }


        public String EventsName
        {
            get { return _eventsName; }
            set { _eventsName = value; }
        }

        public String EventsBriefDescription
        {
            get { return _eventsBriefDescription; }
            set { _eventsBriefDescription = value; }
        }

        public String EventsDescription
        {
            get { return _eventsDescription; }
            set { _eventsDescription = value; }
        }

        public String EventsImageUrl
        {
            get { return _eventsImageUrl; }
            set { _eventsImageUrl = value; }
        }

        public DateTime EventsDate
        {
            get { return _eventsDate; }
            set { _eventsDate = value; }
        }

        public String DisplayOrder
        {
            get { return _displayOrder; }
            set { _displayOrder = value; }
        }

        public Boolean IsActive
        {
            get { return _isActive; }
            set { _isActive = value; }
        }

        public Boolean IsDeleted
        {
            get { return _isDeleted; }
            set { _isDeleted = value; }
        }

        public DateTime CreateDate
        {
            get { return _createDate; }
            set { _createDate = value; }
        }

        public DateTime UpdateDate
        {
            get { return _updateDate; }
            set { _updateDate = value; }
        }


        #endregion
        #region TblEvents Static Methods
        /************************************************************************************
                                    -- CREATE METHOD (STATIC) --
        *************************************************************************************/
        /************************* Architecure note:**********************************
        Note 1:
        This method is specially useful for the case, where we need to use Object Data Source controls.
        For ObjectDataSource/SqlDataSource controls, the insert/update metnod requires paramters methods, rather property based methods.
        However, there is still a way to pass property based objects as method parameter for data source controls, 
        but in that case we could not use Sql type, as view controls or asp parameter control can only contain few of primitive type.
        The main reason to remain the Sql Type in our object architecture is it is faster and contains better way for null value support.
        
        Note 2: 
        Non-primary key: it should be primitive type, as the asp paramter control (included in data source control) supports only primitive types.
        /*****************************************************************************/
        [System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Insert, true)]
        public static Int32 CreateNewTblEvents
        (
            String eventsName,
            String eventsBriefDescription,
            String eventsDescription,
            String eventsImageUrl,
            DateTime eventsDate,
            String displayOrder,
            Boolean isActive,
            Boolean isDeleted,
            DateTime createDate,
            DateTime updateDate
        )
        {
            //creating an empty TblEvents object
            TblEvents tblEvents = new TblEvents();
            tblEvents.EventsName = eventsName;
            tblEvents.EventsBriefDescription = eventsBriefDescription;
            tblEvents.EventsDescription = eventsDescription;
            tblEvents.EventsImageUrl = eventsImageUrl;
            tblEvents.EventsDate = eventsDate;
            tblEvents.DisplayOrder = displayOrder;
            tblEvents.IsActive = isActive;
            tblEvents.IsDeleted = isDeleted;
            tblEvents.CreateDate = createDate;
            tblEvents.UpdateDate = updateDate;

            return TblEvents.CreateNewTblEvents(tblEvents);
        }

        /************************************************************************************
                 -- UPDATE METHODS (STATIC) --
        *************************************************************************************/

        /************************* Architecure note:**********************************
        Note 1:
        This method is specially useful for the case, where we need to use Object Data Source controls.
        For ObjectDataSource/SqlDataSource controls, the insert/update metnod requires paramters methods, rather property based methods.
        However, there is still a way to pass property based objects as method parameter for data source controls, 
        but in that case we could not use Sql type, as view controls or asp parameter control can only contain few of primitive type.
        The main reason to remain the Sql Type in our object architecture is it is faster and contains better way for null value support.
        
        Note 2: 
        There the two types of paramaters will be passed here.
         * a. Primary key paramater: it should be Sql type, as we will bind the primary key property for the view controls (form view, details view etc) as datakey.
         * b. Non-primary key: it should be primitive type, as the asp paramter control (included in data source control) supports only primitive types.
        /*****************************************************************************/

        [System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Update, true)]
        public static bool UpdateTblEvents
        (
            Int32 eventsId,
            String eventsName,
            String eventsBriefDescription,
            String eventsDescription,
            String eventsImageUrl,
            DateTime eventsDate,
            String displayOrder,
            Boolean isActive,
            Boolean isDeleted,
            DateTime createDate,
            DateTime updateDate
        )
        {
            TblEvents tblEvents = TblEvents.GetTblEventsByEventsId(eventsId);

            tblEvents.EventsName = eventsName;
            tblEvents.EventsBriefDescription = eventsBriefDescription;
            tblEvents.EventsDescription = eventsDescription;
            tblEvents.EventsImageUrl = eventsImageUrl;
            tblEvents.EventsDate = eventsDate;
            tblEvents.DisplayOrder = displayOrder;
            tblEvents.IsActive = isActive;
            tblEvents.IsDeleted = isDeleted;
            tblEvents.CreateDate = createDate;
            tblEvents.UpdateDate = updateDate;

            return TblEvents.UpdateTblEvents(tblEvents);
        }

        /************************************************************************************
                         -- DELETE METHODS --
        *************************************************************************************/
        /************************* Architecure note:**********************************
        We have used the employeeId parameter as SqlInt32, to bind the delete method with object data source and view control directly.
        ****************************************************************************/
        [System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Update, true)]
        public static bool DeleteTblEvents
        (
            Int32 eventsId
        )
        {
            //Validate Input
            if (eventsId <= GetEventsIdMinValue)
                throw (new ArgumentOutOfRangeException("eventsId"));

            // Execute SQL Command
            SqlCommand sqlCmd = new SqlCommand();
            AddParameterToSqlCmd(sqlCmd, "@ReturnValue", SqlDbType.Int, 0, ParameterDirection.ReturnValue, null);
            AddParameterToSqlCmd(sqlCmd, "@EventsId", SqlDbType.Int, 0, ParameterDirection.Input, eventsId);
            SetCommandType(sqlCmd, CommandType.StoredProcedure, SP_TBLEVENTS_DELETETBLEVENTS);
            ExecuteScalarCmd(sqlCmd);
            int returnValue = (int)sqlCmd.Parameters["@ReturnValue"].Value;
            return (returnValue == 0 ? false : true);

        }

        /// <summary>
        /// Deletes a set of employees from the database.
        /// </summary>
        public static bool DeleteTblEventsList(System.Collections.Generic.List<Int32> eventsIdListToDelete)
        {
            //Validate Input
            foreach (Int32 eventsId in eventsIdListToDelete)
                if (eventsId <= GetEventsIdMinValue)
                    throw (new ArgumentOutOfRangeException("eventsId"));

            //performing deletion operation //

            string xmlString = FormatXMLForIdArray(eventsIdListToDelete);

            // Execute SQL Command
            SqlCommand sqlCmd = new SqlCommand();
            AddParameterToSqlCmd(sqlCmd, "@ReturnValue", SqlDbType.Int, 0, ParameterDirection.ReturnValue, null);
            AddParameterToSqlCmd(sqlCmd, "@EventsIdList", SqlDbType.Xml, xmlString.ToString().Length, ParameterDirection.Input, xmlString.ToString());
            SetCommandType(sqlCmd, CommandType.StoredProcedure, SP_TBLEVENTS_DELETETBLEVENTSLIST);
            ExecuteScalarCmd(sqlCmd);
            int returnValue = (int)sqlCmd.Parameters["@ReturnValue"].Value;
            return (returnValue == eventsIdListToDelete.Count ? true : false);
        }

        /************************************************************************************
                                 -- GET BY PRIMARY METHODS --
        *************************************************************************************/
        /************************* Architecure note:**********************************
        Retrives an Employee from database, based on it's primary key.
        To view or update an employee, everytime we must have to use this type of 'get' method, 
        since we don't have direct access to the Primary key value for assigning value.
        We have used the employeeId parameter as SqlInt32, to bind the delete method with object data source and view control directly.
        /*****************************************************************************/
        [System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Select, true)]
        public static TblEvents GetTblEventsByEventsId(Int32 eventsId)
        {
            if (eventsId <= GetEventsIdMinValue)
                throw (new ArgumentOutOfRangeException("eventsId"));

            // Execute SQL Command
            SqlCommand sqlCmd = new SqlCommand();
            AddParameterToSqlCmd(sqlCmd, "@EventsId", SqlDbType.Int, 0, ParameterDirection.Input, eventsId);
            SetCommandType(sqlCmd, CommandType.StoredProcedure, SP_TBLEVENTS_GETTBLEVENTSBYEVENTSID);
            GenerateCollectionFromReader test = new GenerateCollectionFromReader(GenerateTblEventsCollectionFromReader);
            CustomCollection<TblEvents> objCollection = ((CustomCollection<TblEvents>)ExecuteReaderCmd(sqlCmd, test));

            if (objCollection.Count > 0)
                return objCollection[0];
            else
                return null;
        }

        /************************************************************************************
                         -- GET BY FOREIGN KEY METHODS --
        *************************************************************************************/

        /************************************************************************************
                 -- GET ALL METHODS --
        *************************************************************************************/
        [System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Select, true)]
        public static CustomCollection<TblEvents> GetAllTblEvents()
        {

            // Execute SQL Command
            SqlCommand sqlCmd = new SqlCommand();
            SetCommandType(sqlCmd, CommandType.StoredProcedure, SP_TBLEVENTS_GETALLTBLEVENTS);
            GenerateCollectionFromReader test = new GenerateCollectionFromReader(GenerateTblEventsCollectionFromReader);
            CustomCollection<TblEvents> objCollection = ((CustomCollection<TblEvents>)ExecuteReaderCmd(sqlCmd, test));

            return objCollection;
        }

        [System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Select, true)]
        public static CustomCollection<TblEvents> GetAllTblEventsPaged(String orderBy, Int32 startRowIndex, Int32 maximumRows)
        {
            //Validate Input
            if (orderBy == "")
                orderBy = "EventsId";

            // Execute SQL Command
            SqlCommand sqlCmd = new SqlCommand();
            AddParameterToSqlCmd(sqlCmd, "@orderby", SqlDbType.VarChar, 50, ParameterDirection.Input, orderBy);
            AddParameterToSqlCmd(sqlCmd, "@startrow", SqlDbType.Int, 0, ParameterDirection.Input, startRowIndex);
            AddParameterToSqlCmd(sqlCmd, "@pagesize", SqlDbType.Int, 0, ParameterDirection.Input, maximumRows);

            SetCommandType(sqlCmd, CommandType.StoredProcedure, SP_TBLEVENTS_GETALLTBLEVENTSPAGED);

            GenerateCollectionFromReader test = new GenerateCollectionFromReader(GenerateTblEventsCollectionFromReader);
            CustomCollection<TblEvents> objCollection = ((CustomCollection<TblEvents>)ExecuteReaderCmd(sqlCmd, test));
            return objCollection;
        }

        [System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Select, true)]
        public static int GetAllTblEventsPagedCount(String orderBy, Int32 startRowIndex, Int32 maximumRows)
        {
            // Execute SQL Command
            SqlCommand sqlCmd = new SqlCommand();

            AddParameterToSqlCmd(sqlCmd, "@ReturnValue", SqlDbType.Int, 0, ParameterDirection.ReturnValue, null);
            SetCommandType(sqlCmd, CommandType.StoredProcedure, SP_TBLEVENTS_GETALLTBLEVENTSPAGEDCOUNT);
            ExecuteScalarCmd(sqlCmd);

            int returnValue = (int)sqlCmd.Parameters["@ReturnValue"].Value;
            return returnValue;
        }

        #endregion
        #region Employee Instance Methods
        /************************************************************************************
                                    -- SAVE (INSERT/UPDATE) METHODS (INSTANCE) --
        *************************************************************************************/
        /// <summary>
        /// Saves (inserts and updates) an Employee into database.
        /// The insertion occur if the EmployeeId conatins default value.
        /// Otherwises it updates the Employee into the database, based on the primary key value stored in EmployeeId.
        /// This technique ensures an Employee will not be updated without having a valid EmployeeId.
        /// </summary>
        public bool Save()
        {
            if (EventsId <= GetEventsIdMinValue)
            {
                Int32 TempId = CreateNewTblEvents(this);
                if (TempId > 0)
                {
                    _eventsId = TempId;
                    return true;
                }
                else
                {
                    // error occurs
                    return false;
                }
            }
            else
            {	//This is a update Command
                return (UpdateTblEvents(this));
            }

        }

        public static Int32 CreateNewTblEvents(TblEvents newTblEvents)
        {
            // validate Parameters
            if (newTblEvents == null)
                throw (new ArgumentNullException("newTblEvents"));

            // Execute SQL Command
            SqlCommand sqlCmd = new SqlCommand();
            int length = 0;
            AddParameterToSqlCmd(sqlCmd, "@ReturnValue", SqlDbType.Int, 0, ParameterDirection.ReturnValue, null);

            AddParameterToSqlCmd(sqlCmd, "@EventsName", SqlDbType.NVarChar, 500, ParameterDirection.Input, newTblEvents.EventsName);
            AddParameterToSqlCmd(sqlCmd, "@EventsBriefDescription", SqlDbType.NVarChar, 500, ParameterDirection.Input, newTblEvents.EventsBriefDescription);
            AddParameterToSqlCmd(sqlCmd, "@EventsDescription", SqlDbType.NVarChar, 4000, ParameterDirection.Input, newTblEvents.EventsDescription);
            AddParameterToSqlCmd(sqlCmd, "@EventsImageUrl", SqlDbType.NVarChar, 500, ParameterDirection.Input, newTblEvents.EventsImageUrl);
            AddParameterToSqlCmd(sqlCmd, "@EventsDate", SqlDbType.DateTime, 0, ParameterDirection.Input, newTblEvents.EventsDate);
            AddParameterToSqlCmd(sqlCmd, "@DisplayOrder", SqlDbType.NVarChar, 50, ParameterDirection.Input, newTblEvents.DisplayOrder);
            AddParameterToSqlCmd(sqlCmd, "@IsActive", SqlDbType.Bit, 0, ParameterDirection.Input, newTblEvents.IsActive);
            AddParameterToSqlCmd(sqlCmd, "@IsDeleted", SqlDbType.Bit, 0, ParameterDirection.Input, newTblEvents.IsDeleted);
            AddParameterToSqlCmd(sqlCmd, "@CreateDate", SqlDbType.DateTime, 0, ParameterDirection.Input, newTblEvents.CreateDate);
            AddParameterToSqlCmd(sqlCmd, "@UpdateDate", SqlDbType.DateTime, 0, ParameterDirection.Input, newTblEvents.UpdateDate);

            SetCommandType(sqlCmd, CommandType.StoredProcedure, SP_TBLEVENTS_CREATENEWTBLEVENTS);
            ExecuteScalarCmd(sqlCmd);
            return (Int32.Parse(sqlCmd.Parameters["@ReturnValue"].Value.ToString()));

        }
        /// <summary>
        /// Updates an TblEvents instance to the database.
        /// </summary>
        public static bool UpdateTblEvents(TblEvents newTblEvents)
        {
            // validate Parameters
            if (newTblEvents == null)
                throw (new ArgumentNullException("newTblEvents"));

            // Execute SQL Command
            SqlCommand sqlCmd = new SqlCommand();
            int length = 0;
            AddParameterToSqlCmd(sqlCmd, "@ReturnValue", SqlDbType.Int, 0, ParameterDirection.ReturnValue, null);

            AddParameterToSqlCmd(sqlCmd, "@EventsId", SqlDbType.Int, 0, ParameterDirection.Input, newTblEvents.EventsId);
            AddParameterToSqlCmd(sqlCmd, "@EventsName", SqlDbType.NVarChar, 500, ParameterDirection.Input, newTblEvents.EventsName);
            AddParameterToSqlCmd(sqlCmd, "@EventsBriefDescription", SqlDbType.NVarChar, 500, ParameterDirection.Input, newTblEvents.EventsBriefDescription);
            AddParameterToSqlCmd(sqlCmd, "@EventsDescription", SqlDbType.NVarChar, 4000, ParameterDirection.Input, newTblEvents.EventsDescription);
            AddParameterToSqlCmd(sqlCmd, "@EventsImageUrl", SqlDbType.NVarChar, 500, ParameterDirection.Input, newTblEvents.EventsImageUrl);
            AddParameterToSqlCmd(sqlCmd, "@EventsDate", SqlDbType.DateTime, 0, ParameterDirection.Input, newTblEvents.EventsDate);
            AddParameterToSqlCmd(sqlCmd, "@DisplayOrder", SqlDbType.NVarChar, 50, ParameterDirection.Input, newTblEvents.DisplayOrder);
            AddParameterToSqlCmd(sqlCmd, "@IsActive", SqlDbType.Bit, 0, ParameterDirection.Input, newTblEvents.IsActive);
            AddParameterToSqlCmd(sqlCmd, "@IsDeleted", SqlDbType.Bit, 0, ParameterDirection.Input, newTblEvents.IsDeleted);
            AddParameterToSqlCmd(sqlCmd, "@CreateDate", SqlDbType.DateTime, 0, ParameterDirection.Input, newTblEvents.CreateDate);
            AddParameterToSqlCmd(sqlCmd, "@UpdateDate", SqlDbType.DateTime, 0, ParameterDirection.Input, newTblEvents.UpdateDate);

            SetCommandType(sqlCmd, CommandType.StoredProcedure, SP_TBLEVENTS_UPDATETBLEVENTS);
            ExecuteScalarCmd(sqlCmd);
            int returnValue = (int)sqlCmd.Parameters["@ReturnValue"].Value;
            return (returnValue == 0 ? false : true);
        }
        #endregion

        #region TblEvents Related Collections
        /// <summary>
        /// Creates and returns a strongly typed collection of Employee custom entity. 
        /// The colelction is created through iterating on the IdataReader object which contains Employee information, as a set of records, similar to tabular format.
        /// </summary>
        public static CollectionBase GenerateTblEventsCollectionFromReader(IDataReader returnData)
        {

            //creating the instance of Employee collection
            CustomCollection<TblEvents> colTblEvents = new CustomCollection<TblEvents>();

            /************************* Architecure note:**********************************
             * Below code includes the null value functionality to retieve the data which has nill value in database end.
             * Design consideration:
             * Besides general data fields, special care should be taken for primary keys, to assign '0'/defaultvalue, rather passing 'Null' value in constructor parameter.
             * Although we are considering sqldb tyoe data for the current data container, but while retireving data from database end, through datareader object, we need to cast data reader objects using .net primitive data type, 
             * rather using sqldb type to cast, since data reader objects don't support sql db type to be casted.
             *****************************************************************************/

            //Iterating thriugh the data reader, to generate Employee collection.

            //getting the Employee collection by iterating thru the data reader
            while (returnData.Read())
            {
                //passing the TblEvents constructor parameters from the current instance of data reader fields.
                TblEvents newTblEvents = new TblEvents
                (
                    returnData["EventsId"] == System.DBNull.Value ? GetEventsIdMinValue : (Int32)returnData["EventsId"],
                    returnData["EventsName"] == System.DBNull.Value ? string.Empty : (String)returnData["EventsName"],
                    returnData["EventsBriefDescription"] == System.DBNull.Value ? string.Empty : (String)returnData["EventsBriefDescription"],
                    returnData["EventsDescription"] == System.DBNull.Value ? string.Empty : (String)returnData["EventsDescription"],
                    returnData["EventsImageUrl"] == System.DBNull.Value ? string.Empty : (String)returnData["EventsImageUrl"],
                    returnData["EventsDate"] == System.DBNull.Value ? DateTime.MinValue : (DateTime)returnData["EventsDate"],
                    returnData["DisplayOrder"] == System.DBNull.Value ? string.Empty : (String)returnData["DisplayOrder"],
                    returnData["IsActive"] == System.DBNull.Value ? false : (Boolean)returnData["IsActive"],
                    returnData["IsDeleted"] == System.DBNull.Value ? false : (Boolean)returnData["IsDeleted"],
                    returnData["CreateDate"] == System.DBNull.Value ? DateTime.MinValue : (DateTime)returnData["CreateDate"],
                    returnData["UpdateDate"] == System.DBNull.Value ? DateTime.MinValue : (DateTime)returnData["UpdateDate"]

                );
                //adding the Employee to the collection
                colTblEvents.Add(newTblEvents);
            }

            //returns the collection of Companys 
            return (colTblEvents);
        }

        #endregion
        #region Constants and Default Values

        public static Int32 GetEventsIdMinValue
        {
            get
            {
                return 0;
            }
        }

        //create method related contants
        internal const string SP_TBLEVENTS_CREATENEWTBLEVENTS = "sp_TblEvents_CreateNewTblEvents";
        internal const string SP_TBLEVENTS_UPDATETBLEVENTS = "sp_TblEvents_UpdateTblEvents";
        internal const string SP_TBLEVENTS_DELETETBLEVENTS = "sp_TblEvents_DeleteTblEvents";
        internal const string SP_TBLEVENTS_DELETETBLEVENTSLIST = "sp_TblEvents_DeleteTblEventsList";
        internal const string SP_TBLEVENTS_GETTBLEVENTSBYEVENTSID = "sp_TblEvents_GetTblEventsByEventsId";
        internal const string SP_TBLEVENTS_GETALLTBLEVENTS = "sp_TblEvents_GetAllTblEvents";
        internal const string SP_TBLEVENTS_GETALLTBLEVENTSPAGED = "sp_TblEvents_GetAllTblEventsPaged";
        internal const string SP_TBLEVENTS_GETALLTBLEVENTSPAGEDCOUNT = "sp_TblEvents_GetAllTblEventsPagedCount";

        #endregion
    }
}
